Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. How Will the Economy React to AI? What do concerns or uncertainty about AI mean for your future and your financial strategy? Leaving Your Lasting Legacy Want to do more with your wealth? You might want to consider creating a charitable foundation.